PETERS WILLIAM J

CIK 00012631362 companiesRANCHO CUCAMONGA, CA

SEC Profile

Transactions

Companies

Filings

CIK

0001263136

Recent Transactions

50 trades

Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2026-03-10$18.91/sh−3,297→ 177,036 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2026-03-09+121,071→ 121,071 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2026-03-09+58,693→ 180,333 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2026-03-06$19.34/sh−2,146→ 121,640 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2026-03-04$19.96/sh−1,744→ 123,786 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-05-19$24.79/sh−273→ 124,985 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-17$27.69/sh−3,004→ 125,258 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-15$26.66/sh−1,968→ 128,262 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-10+36,747→ 130,230 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2025-03-10+78,039→ 78,039 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-06$28.32/sh−2,141→ 93,483 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-04$27.62/sh−1,739→ 95,624 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-04$27.54/sh−4,231→ 97,363 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-03-04$13.35/sh+7,490→ 101,594 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2025-03-04−7,490→ 0 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-11-06$13.03/sh+7,426→ 101,529 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-11-06$52.05/sh−7,426→ 94,103 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2024-11-06−7,426→ 23,674 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-07-31$44.23/sh−10,282→ 94,103 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2024-07-31−10,282→ 4,943 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-07-31$20.23/sh+10,282→ 104,385 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-06-27$40.85/sh−2,961→ 94,738 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-06-27$41.29/sh−635→ 94,103 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-05-19$43.48/sh−387→ 97,268 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-17$43.05/sh−4,255→ 97,655 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-16$43.05/sh−5,105→ 101,910 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-15$43.05/sh−2,285→ 107,015 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-06$46.31/sh−2,190→ 109,300 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-06$46.30/sh−13,404→ 116,222 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-06$11.33/sh+8,826→ 129,626 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-06$48.00/sh−51→ 111,490 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-06$46.98/sh−4,681→ 111,541 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2024-03-06−8,826→ 0 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2024-03-04+40,955→ 40,955 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-03-04+19,440→ 120,800 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2023-11-14−21,250→ 15,225 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-11-14$56.53/sh−14,868→ 101,360 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2023-11-14−38,000→ 31,100 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-11-14$55.67/sh−30,162→ 116,228 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-11-14$20.23/sh+21,250→ 122,610 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-11-14$13.03/sh+38,000→ 160,610 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-11-14$54.76/sh−14,220→ 146,390 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2023-09-06−25,250→ 69,100 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2023-09-06−10,000→ 5,053 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-09-06$51.75/sh−60,684→ 101,419 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-09-06$13.03/sh+25,250→ 162,103 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-09-06$19.79/sh+10,000→ 115,603 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-09-06$20.23/sh+21,250→ 136,853 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2023-09-06−21,250→ 36,475 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-09-06$52.26/sh−59→ 101,360 total

Companies

Recent Filings

Address

C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET

RANCHO CUCAMONGA, CA, 91730

View on SEC.gov